Rose plant Arotrusim

ABSTRACT

A rose variety of the Floribunda class is provided that bears shapely crimson buds in clusters or two or three on a relatively long stem and has a vigorous, upright plant that needs little care and is better than average in resistance to disease and cold.

SUMMARY OF THE INVENTION

The present invention relates to a new and distinct variety of roseplant of the Floribunda class, which was originated by me by crossingthe variety Mactrum, U.S. Plant Pat. No. 4,297, with the variety Jacink,U.S. Plant Pat. No. 4,089.

The primary objective of this breeding was to produce a new rose varietyof the Floribunda class capable of growing vigorously on its own rootsystem, as a hedge plant or along a fence, with red flower color, andhaving good bud and stem qualities and good overall disease resistanceand cold hardiness. This objective was substantially achieved, alongwith other desirable improvements, as evidenced by the following uniquecombination of characteristics which are outstanding in the new varietyand which distinguish it from its parents as well as from all othervarieties of which I am aware. For example, this new rose variety has:

1. A vigorous, upright, medium height plant that is easily propagated onits own root system;

2. Red flowers;

3. Relatively long stems bearing irregular clusters of two or threeflowers;

4. Long, pointed and shapely buds.

Asexual reproduction of this new variety by cuttings, as performed atSomis, Calif., shows that the foregoing characteristics and distinctionscome true to form and are established and transmitted through succeedingpropagation.

DESCRIPTION OF THE DRAWING

The accompanying illustration shows typical specimens of the vegetativegrowth and flowers of this new variety in different stages ofdevelopment, depicted in color as nearly true as it is reasonablypossible to make the same in a color illustration of this character.

DETAILED DESCRIPTION OF THE INVENTION

The following is a detailed description of my new rose variety, whichhas been denominated "Arotrusim". Throughout this specification, colornames beginning with a smaller letter signify ordinary dictionarysignificance for the color, while color names beginning with a capitalletter designate values based upon the R.H.S. Colour Chart of The RoyalHorticultural Society of London, England.

Observations of the buds and flowers were made from specimens grown in agreenhouse at Somis, Calif. in January.

Flower

The blooming habit is continuous. The bud size is one-half inch inheight when the petals start to unfurl. The bud form is long andpointed. The bud color when sepals first divide is red between near RedGroup 53A and near Red Group 53B. When half blown, both the upper andlower sides of the petals are red between near Red Group 53B and nearRed Group 53C. The sepals are between near Green Group 143A and nearGreen Group 143B. The outer surface is smooth with scattered stipitateglands, while the inner surface is uniformly covered with a fine woolytomentum. There are three lightly appendaged sepals, and twounappendaged sepals with a hairy edge. The receptacle color is nearGreen Group 143A. The receptacle has a funnel shape, a somewhat longsize, and a smooth surface. The peduncle is of medium length and has asmooth surface with some stipitate glands. The peduncle is light greenand erect. Opening is by petal unfurling, and is about average induration.

Bloom

Bloom size is medium to large, with an average open size of between fourand four and one-half inches. The blooms are borne singly and inirregular clusters of two to three flowers. The stems are of normalstrength and are medium to long in length. The form when first open ishigh center and is retained to the end with a slight flattening. Undernormal conditions there are 26 to 30 petals. The variety produces brightred flower petals surrounding golden anthers with red filaments and alight yellow stigma. The upper side and the reverse side of the petalsat the flower center are both near Red Group 53A to Red Group 53B. Thereis a small white spot near White Group 155D near the base of the petals.The major color on the upper and lower sides is between near Red Group54A and near Red Group 53B. There are no variegations. The generaltonality at the end of the first day shows no change in color. At theend of the third day, the flowers fade to a more pinkish color near RedGroup 53C or near Red Group 53D.

The fragrance is slight. The petals have a good texture and are round toobovate in shape with slightly recurved tips. The arrangement isimbricated with a few petaloids in the center. The blooms drop offcleanly, and last both on the plant and as a cut flower for a fair tolong time.

Reproductive Parts

The anthers are yellow, of medium size, and are partly tucked in thecalyx. The filaments are red, the pollen is gold yellow, and the stigmasare yellow. The styles are pink between near Red Group 49A and near RedGroup 49B.

Plant

The plant has vigorous, upright growth of medium height in bush andshrub form.

Foliage

The foliage is large and abundant. The new foliage is reddish brown andthe old foliage is matt green. A normal mid-stem leaf has sevenleaflets.

The leaflets have an oval pointed shape with a leathery, non-glossytexture, and have a single serrated edge. Petiole rachis is green andhas some prickles on the underside. Stipules are medium and serrated.The foliage has better than average disease resistance. It is resistantto mildew and has some resistance to blackspot under normal growingconditions at Somis, Calif.

Wood

New wood is reddish colored with a smooth bark. Old wood is green with arough bark.

Prickles

There are an ordinary number of prickles on the main canes from the baseand on the laterals from the main canes. The prickles are medium in sizeand are hooked downward. The prickles are red colored when young. Thereare a few small prickles on the main stalks and no small prickles on thelaterals.

Parentage

The seed parent was of the variety Mactrum. The pollen parent was oh thevariety Jacink.

Classification

Botanical is rosa hybrid. Commercial is Floribunda.

I claim:
 1. A new and distinct variety of rose plant and parts thereofof the Floribunda class, characterized particularly as to novelty by thelong shapely buds of crimson produced in clusters of usually two tothree flowers on relatively long stems and the vigorous, upright plantwhich grows well on its own root system, requires little care, and hasbetter than average disease resistance and above average cold hardiness,essentially as described and illustrated herein.